The movie Argo, up for seven Oscars at this year's Academy Awards, is based on the true story of the CIA rescue of Americans in Tehran during the 1979 hostage crisis. Missing from most of the coverage of this movie? The actual guy who ran the mission, played by Ben Affleck in the movie.

Movie aficionados — and historians — know that the movie sticks pretty close to what really happened during the Iranian Revolution. In 1980, a CIA agent named Tony Mendez sneaked into Iran and spirited away six American diplomats who were hiding with Canadians.

The chase scene at the end of the movie is pretty much Hollywood hype. Still, Mendez and one of the American diplomats say those hours at the airport were plenty tense.

There were actually eight Americans leaving Iran that day — the six diplomats, plus Mendez and his partner, who didn't even get a mention in the movie.

The Americans had been holed up at Canadian diplomats' homes for 80-odd days. That let them closely follow the chaos in the streets of Tehran — and to dwell on it. It wasn't pretty.

On the day of departure, Mendez went to the airport ahead of the rest of the group to make sure everything was OK.

"I signaled my partner to bring the six in, and we went through security, customs, and arrived at immigration," Mendez says. "Lee [was] a little bit ahead of us — 'cause he was the most up for it, I think."

Lee is Lee Schatz, a U.S. Agriculture Department employee. His office was across the street and overlooked the embassy grounds, where he had a bird's-eye view of the violent takeover. So he knew what was at stake. But he also knew the airport well — and he didn't smoke.

"There was a really long line of people waiting to check in in the smoking section, and there was no line really in the no-smoking section," Schatz says. "So rather than stay with the group, I just walked up where there was no line, got my seat assignment, and walked on through."

Schatz then had to face a gauntlet of desks — check this, check that, check the health card — and then one final stop, where you handed in the yellow copy of the document you'd filled out when you'd arrived in the country.

Theoretically, the two parts would be matched up. But in those days there was no real way to do it on the spot — despite the way it was portrayed in the film. Everybody knew that this was the one weak point of the whole concocted story. If they tried to match up the documents and failed, they'd be caught.

"I walk up, hand them this, and we know this is clearly a false document that has been prepared on our behalf," Schatz says. "I handed it to the individual, and he looked at my passport and walked into a side room. And I thought, 'Whoa. They can't actually match up these numbered pieces of paper, can they?' Seemed like forever. This guy came out stirring a cup of tea."

It was actually just a tea break. The official stamped Schatz's passport and Schatz walked through to the departure lounge, trying not to breathe a sigh of relief too obviously. The others followed, but they weren't out of the woods yet.

In fact, Mendez says the departure lounge was what worried headquarters the most, because that's where the Revolutionary Guard "did their business," as he put it, with passengers.

"It came time to have the flight called, and when they came on the intercom, they said Swiss Air is not going to depart on time," Mendez says. "'It's got a mechanical issue.' "

Now, no one panicked — but they were worried. Yes, they had backup plans, though they were pretty bad ones.

And then, about an hour later, they called the flight. Mendez boarded with Bob Anders, one of the American diplomats in the group.

"And as we went up the ramp to the aircraft, Bob Anders nudged me and said, 'You guys think of everything,' " Mendez says. "He pointed at the nose of the Swiss aircraft, and there, lettered across the nose, was the word Aargau — close enough to the good ship Argo. And we always look for the omen in these operations. There's some sign that tells you this is going to work. And that was the omen."

Then, wheels up. No one was chasing. But the movie did get the next part right — or mostly right. Mendez says that when the plane crossed out of Iranian airspace, the Americans did break into cheers.

What the movie didn't show is that lots of other passengers were cheering, not just the Americans. They didn't know what was going on, Mendez says, but they, too, were happy to be out of Tehran.

Copyright 2013 NPR. To see more, visit http://www.npr.org/.

Transcript

SCOTT SIMON, HOST:

This is WEEKEND EDITION from NPR News. I'm Scott Simon. The film "Argo" is up for seven Oscars, and the movie's pretty faithful to what really happened during the Iranian revolution. In 1980, a CIA agent named Tony Mendez slipped into Iran and managed to help sneak out six U.S. diplomats who were hiding with Canadians by posing as a film crew. One of the Oscar nominations is for Alan Arkin. He sums it up pretty nicely:

(SOUNDBITE OF MOVIE, "ARGO")

ALAN ARKIN: (as Lester Siegel) OK. You got six people hiding out in a town of, what, four million people, all of whom chant death to America all the live-long day. Then you're gonna sneak 007 over here into a county that wants CIA blood on their breakfast cereal and you're going to walk the Brady Bunch out of the most watched city in the world.

SIMON: Now, there's some real suspense for you. But when the movie ends, with the chase scene at the airport, the filmmakers did indulge in certain amount of Hollywood hype. Reporter Marcus Rosenbaum talked with Tony Mendez and one of the U.S. diplomats a few years ago, and they say that those final hours at the Tehran airport were plenty tense - no Hollywood treatment needed.

MARCUS ROSENBAUM, BYLINE: There were actually eight Americans leaving Iran that day - the six diplomats, plus Tony Mendez and his partner, a character who didn't even get a mention in the movie. The diplomats had been holed up in Canadian diplomats' homes for 80-odd days. That let them closely follow the chaos in the streets of Tehran and to dwell on it. It wasn't pretty.

(SOUNDBITE OF CHANTING)

ROSENBAUM: On the day of departure, Mendez went to the airport ahead of the rest of the group to make sure everything was OK.

TONY MENDEZ: I signaled my partner to bring the six in, and we went through security, customs, and all arrived at immigration, Lee a little bit ahead of us, 'cause he was the most up for it, I think.

ROSENBAUM: Lee is Lee Schatz, a U.S. Agriculture Department employee. His office overlooked the embassy grounds from across the street where he had a bird's-eye view of the violent takeover. So, he knew what was at stake. But he also knew the airport well - and he didn't smoke.

LEE SCHATZ: There was a really long line of people waiting to check in in the smoking section, and there was no line really in the no-smoking. So, rather than stay with the group, I just walked up where there was no line, got my seat assignment, walked right on through.

ROSENBAUM: To face a gauntlet of desks - check this, check that, check the heath card - and then one final stop: where you handed in the yellow copy of the document you'd filled out when you'd arrived in the country. Theoretically, the two parts would be matched up. But in those days there was no real way to do it on the spot, despite the way it was portrayed in the film. Everybody knew that this was the one weak point of the whole concocted story. If they tried to match up the documents and failed, they'd be caught. Schatz remembers it this way:

SCHATZ: I walk up, hand them this, and we know this is clearly a false document that has been prepared on our behalf. I handed it to the individual. He looked at my passport, and walked into a side room. And I thought whoa. They can't actually match up these numbered pieces of paper, can they? Seemed like forever. This guy came out stirring a cup of tea.

ROSENBAUM: Just a tea break. He stamped Schatz's passport, and Schatz walked through to the departure lounge, trying not to breathe his sigh of relief too obviously. The others followed, but they weren't out of the woods yet. In fact, Tony Mendez says the departure lounge was what worried headquarters the most, because that's where the Revolutionary Guard, as he put it, did their business with passengers.

MENDEZ: It came time to have the flight called, and when they came on the intercom they said Swiss Air is not going to depart on time. It's got a mechanical.

ROSENBAUM: Now, no one panicked but they sure were worried. Yes, they had backup plans but they were pretty bad ones. And then about an hour later they called the flight. Mendez boarded with Bob Anders, one of the American diplomats in the group.

MENDEZ: And as we went up the ramp to the aircraft, Bob Anders nudged me and said you guys think of everything. Pointed at the nose of the Swiss aircraft, and there lettered across the nose was the word Argow - close enough to the good ship Argo. And we always look for the omen in these operations. There's some sign that tells you this is going to work. And that was the omen.

ROSENBAUM: Then wheels up. No one was chasing. But the movie did get the next part right - or mostly right.

(SOUNDBITE OF MOVIE, "ARGO")

NANCY STELLE: (as Swissair Flight Attendant) Ladies and gentlemen, it is our pleasure to announce that alcoholic beverages are now available as we have cleared the Iranian airspace.

ROSENBAUM: Tony Mendez says that when the plane crossed out of Iranian airspace, the Americans did break into cheers. What the movie didn't show is that lots of passengers were cheering, not just the Americans. They didn't know what was going on, Mendez says, but they too were happy to be out of there.